Gaya APA
Hardjasoemantri, K. (1994).
Environmental Legislation In Indonesia (3).
Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
Hardjasoemantri, Koesnadi.
"Environmental Legislation In Indonesia".
3
Yogyakarta:
Gadjah Mada University Press,
1994.
Buku.